Selenium-E2500 (Antioxidant Duo)
Selenium-E2500 (Antioxidant Duo)
Selenium-E2500 (Antioxidant Duo)
Selenium-E2500 (Antioxidant Duo)

Selenium-E2500 (Antioxidant Duo)

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Selenium Yeast + Natural Vitamin E @ 2,500 IU

Powerful antioxidant duo; fights oxidative stress, strengthens immune system & more! Available with MCT Oil (Add-On Option) to enhance absorption of fat-soluble vitamin E.



Ingredients: d-alpha-tocopheryl acetate (natural vitamin E) & selenium yeast.

Serving Size: 1 Scoop (4.4 g), once daily = 2,500 IU of natural vitamin E & 2 mg of elemental selenium.


Ingredients: d-alpha-tocopheryl acetate (natural vitamin E), MCT oil* & selenium yeast. *Organic ingredient

Serving Size: 1 Scoop (7.5 g), once daily = 2,500 IU of natural vitamin E & 2 mg of elemental selenium.


About Selenium...

A Vital Micronutrient for Optimal Health.

This essential trace mineral supports proper cognitive function, nerve, muscle and joint function and it enhances the antioxidant effects of vitamin E. It stimulates white blood cell activity, protects tissues from free radical damage reducing oxidative stress, and it helps prevent infections, strengthening the overall immune system. Selenium activates the antioxidant enzyme Glutathione Peroxidase, which aids the body in natural detoxification, and it's essential to thyroid hormone synthesis and metabolism, reproduction / fertility, healthy metabolic function and DNA synthesis. 

Selenium Yeast

Our selenium yeast is an organic form of the trace mineral selenium, as naturally occurs in some plants. The yeast (Saccharomyces cerevisiae) is grown with selenium, biochemically creating seleno-amino acids. Selenium yeast is highly bioavailable, better assimilated by the horse’s body, and has less risk of potential toxicity than the inorganic form, sodium selenite.  


We recommend checking your horses levels of selenium through blood work with your veterinarian prior to supplementation to avoid selenium overload. Specifically, a "whole blood selenium" test will measure selenium in both the plasma and inside the red blood cells, giving a more accurate reflection of your horse's body's selenium levels.

"Red blood cell levels drop first. If you only test serum or plasma, results can show adequate levels when total body selenium is actually borderline or low." 

-Dr. Eleanor Kellon, VMD

Selenium needs will vary from horse to horse, according to activity level, health status, age and diet, so please don't guess - check!

Selenium Availability Across the USA

Selenium concentrations in the soil, grass, hay, forage and feeds varies across the country, and while there are areas known for being deficient, there are also areas known for having high selenium available to the horse. For the deficient horse, adding selenium yeast into his or her regimen can make an enormous difference in health, vitality, movement and energy levels, but please determine your horse's levels before adding supplemental selenium yeast into their diet to avoid potential toxicity.

"Within the US, low selenium levels tend to exist in the northeast, the Ohio valley, Florida, and the northwest. Western and eastern provinces of Canada are likely to also be low. But pockets of high-selenium soils can exist anywhere. Mining and industrial waste can contaminate soils and water supplies. Washington State, for example, typically low in selenium, has pockets along the coastline that are high. When in doubt, test. If you can’t test your hay or pasture, have your horse’s blood tested."

-Dr. Juliet Getty Ph.D., Getty Equine Nutrition

Click to see map for a general idea of selenium concentration in the soil in your location.

Signs of Selenium Deficiency

  • Lethargy
  • Poor performance
  • Difficulty moving normally / stiff gait
  • Muscle spasms / trembling
  • Sore muscles
  • Tying up
  • Eye cataracts
  • Respiratory disorders
    • Asthma / Heaves / COPD
  • Weak immune system / chronic infections
  • Trouble chewing / swallowing
  • White muscle disease
  • Thyroid imbalances
  • Tumors / Cancer
  • Reproductive issues / infertility

Signs of Selenium Toxicity

  • Hair loss along the mane or tail
  • Hoof cracks around the coronary band (excess selenium can replace the naturally existing sulfur found in hoof and hair protein (keratin))
  • Swelling or reddening along coronary band
  • Parallel cracks below the coronary band
  • Lameness
  • Abdominal pain
  • Respiratory failure
  • Blindness

Benefits of Selenium Yeast

  • Supports joint and muscle mobility
  • Supports nervous system
  • Supports cardiovascular system
  • Supports neurological function
  • Supports overall immune system
    • Anti-viral support
    • Fights against microbial infections
  • Supports respiratory function
    • Can relieve asthma / heaves / COPD symptoms
  • Oxidative stress protection
    • Fights off free radicals
  • Anti-cancer
    • Slows growth of tumors
  • Supports reproductive system
    • Supports fertility
  • Supports normal thyroid function & thyroid hormone synthesis
  • Supports balanced hormones & more


About Natural Vitamin E...

Powerful Antioxidant Vitamin

Vitamin E is a fat-soluble vitamin that supports vital functions throughout the body. It acts as an antioxidant, neutralizes harmful free radicals, helps prevent disease development, repairs damaged skin, supports the endocrine and nervous systems, helps balance hormones, can ease the symptoms of PMS, supports vision, strengthens the immune system, helps protect the body from cancer and so much more.

Vitamin E supplementation is important for most horses because they can't internally synthesize it like they can other vitamins. In order to naturally receive enough vitamin E, horses typically need to be on lush grass pasture for approximately 12 hours a day. For horses on sand lots or restricted pasture, Vitamin E supplementation can be crucial for them to stay well, recover from injury or illness properly, and to thrive.

Benefits of Natural Vitamin E:

•Helps muscles, nerves & internal workings function smoothly
•Acts an antioxidant, protecting cells from free radicals
•Supports the immune system
•Supports improved blood circulation
•Supports cardiovascular system
•Supports a normal inflammatory response
•Increases amount of oxygen the body receives
•Supports a shiny coat, healthy skin, hair & hooves
•Helps fight off bacterial & viral infections
•Supportive for horses with chronic diseases / immune challenges.

Vitamin E is fat-soluble, therefore should be consumed with a healthy fat in order to be properly absorbed in the body. If your horse's diet does not already include a source of healthy fats, you can select the Add-On Option: Selenium-E2500+, which includes organic MCT oil as a healthy fat source for absorption. Otherwise, you can pair Selenium-E2500 with our Grace’s Abundance, Chia Seeds, Cracked Flax Seeds or Camelina Seed Oil; the high fat content in these products will assist with absorption. 

Absorption Factor

Our Natural Vitamin E is highly bioavailable when fed in conjunction with healthy fats; comparable to liquid forms of vitamin E, without the (unlisted) preservatives.

*WARNINGS: 1) Do not provide supplemental vitamin E before surgery, as it can reduce the blood’s ability to clot. 2) In the rare case that your horse is anemic and on an iron supplement, avoid mixing any Vitamin E supplement with Iron supplements (hematinic) as it may negatively affect absorption rates. If you feed an Iron supplement along with Vitamin E, it is recommended that you feed them in separate doses (i.e., Vit E supplement in the morning and Iron supplement in the evening); this pattern avoids destroying the uptake of either supplement.
Storage: Please store in a cool, dry place.